Quote:
Originally Posted by Unleashed
Carleton - kudos, welding cast iron is something I tend to avoid all I can. I'm never confident with it, even with preheating, and, as you say, argon and MIG. It's never a nice job to do, and almost always fails.
|
Well now IT has proven itself,the thinner the iron the better.
Since most of my experience is restricted to pre-29 cars there are several methods of water jacket repair.....
First we have "lace welding" locating the crack,drilling holes at the ends to prevent the crack from spreading and then drilling minute holes along the whole crack,tapping them for a soft tapered brass plug and installing said plug until tight,this is repeated along the length of the crack,driling and tapping at the end of the last tapered and threaded brass plug.Finishing with a center punch clinches the deal,and after filing flat you have a watertight seal.
Also we use soldering,if the water jacket flaw{most commom on Rolls Phantom 1 &2} is brief enough we sand blast the iron jacket,drill said crack-stopping holes at the end and solder a patch of brass or copper over the crack,my 1915 InterState has this and it has held for 15 years,such are the methods I learned among the mostly now deceased machinists and collectors whom I revered.